diff --git a/static/style.css b/static/style.css
index e9dd5c0..6d87588 100644
--- a/static/style.css
+++ b/static/style.css
@@ -343,6 +343,9 @@ a.internal::before {
 a.internal::after {
     content: ' }';
 }
+a.external::after {
+    content: ' ↗';
+}
 
 /* Markup */
 .underlined {